PF30 press fit bottom bracket shell (46 mm bore press fit)
What a PF30 press fit shell measures, which crank spindles it hosts, and the bottom bracket to buy.
Published dimensions
| Type | press fit |
|---|---|
| Shell inside diameter | 46 mm smooth press-fit bore |
| Shell width | 68 mm (road) and 73 mm (MTB) |
| Thread | none, bearings or cups press into the 46 mm bore |
| Crank spindles it hosts | designed around a 30 mm spindle; also runs 24 mm, 24/22 mm and 28.99 mm via a reducer BB |
SHELL 68 mm (road) and 73 mm (MTB)
SPINDLE designed around a 30 mm spindle; also runs 24 mm, 24/22 mm and 28.99 mm via a reducer BB
SPINDLE designed around a 30 mm spindle; also runs 24 mm, 24/22 mm and 28.99 mm via a reducer BB
Used on: road and MTB frames from Cannondale, Cervelo and others.
PF30 is a 46 mm bore, larger than BB30's 42 mm, and takes a pressed cup rather than a bare bearing. A 30 mm crank drops in with a PF30 BB; a 24 mm Shimano or 28.99 mm DUB crank needs a PF30 reducer BB, not a bare bearing.
Fit a crank to this shell
30 mm spindle (BB30 / PF30 style) in a PF30 press fit shelldrops inShimano Hollowtech II (24 mm) in a PF30 press fit shellneeds a reducerSRAM DUB (28.99 mm) in a PF30 press fit shellneeds a reducerBB30 press fitrelated shell (42 mm bore press fit)BB386EVO press fitrelated shell (46 mm bore, 86.5 mm)BBRight press fitrelated shell (46 mm bore, 79 mm)
SOURCES: Park Tool, Bottom Bracket Standards and Terminology · Wheels Manufacturing, Three Common Bottom Bracket Misconceptions